OK, no problem.
Let's say you want to paste this image into a thread:
http://i.imgur.com/F2Two6Rl.jpgTo make it visible, you can either type
[img][/img]
or click the button to the upper left of your message box (the box you type inside after you click Post Reply) which is just under the
B button.
Then you paste your link inside
[img][/img]
so that it will look like
[img]http://i.imgur.com/F2Two6Rl.jpg[/img]
However, we ask that you do not hotlink, i.e., link directly to an image on another website. Use an image hosting site, like imgur, imageshack, tinypic or whatever instead.
Then click Post.
Another option is, you can click "Attachments and other options", which is underneath your message box, then navigate to the image on your comp and post that way.
Again, see Forum Rules and Posting Guidelines on
this board for more information.